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Note 10 - Equity Compensation (Tables) | 6 Months Ended
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Dec. 31, 2017
Notes Tables |
Stock Warrants, Valuation Assumptions [Table Text Block] |
|  | Three Months Ended |  |  | Six Months Ended |
|  | December 31 |  |  | December 31 |
|  | 2017 |  |  | 2016 |  |  | 2017 |  |  | 2016 |
Dividend yield |  |  | 3.06 | % |  |  | 2.07 | % |  |  | 3.35 | % |  |  | 1.81 | %
Expected volatility |  |  | 41 | % |  |  | 41 | % |  |  | 41 | % |  |  | 43 | %
Risk-free interest rate |  |  | 1.94 | % |  |  | 2.06 | % |  |  | 1.77 | % |  |  | 1.00 | %
Expected life (in years) |  | 6.0 |  |  | 6.0 |  |  | 6.0 |  |  | 6.0 |
Share-based Compensation, Stock Options, Activity [Table Text Block] |
|  | Si x Months Ended December 31, 2017 |
|  |  |  |  |  | Weighted |  |  | Weighted |  |  |  |  |
|  |  |  |  |  | Average |  |  | Average |  |  | Aggregate |
|  |  |  |  |  | Exercise |  |  | Remaining |  |  | Intrinsic |
|  | Shares |  |  | Price |  |  | Contractual Term (in years) |  |  | Value |
Outstanding at 6/30/17 |  |  | 3,119,688 |  |  | $ | 9.12 |  |  |  | 7.4 |  |  | $ | 2,332,224 |
Granted |  |  | 794,537 |  |  | $ | 5.98 |  |  |  |  |  |  |  |  |
Forfeitures |  |  | (438,609 | ) |  | $ | 11.62 |  |  |  |  |  |  |  |  |
Exercised |  |  | (26,939 | ) |  | $ | 6.49 |  |  |  |  |  |  |  |  |
Outstanding at 12/31/17 |  |  | 3,448,677 |  |  | $ | 8.10 |  |  |  | 7.4 |  |  | $ | 971,344 |
Exercisable at 12/31/17 |  |  | 1,527,651 |  |  | $ | 8.14 |  |  |  | 5.7 |  |  | $ | 218,246 |
|  | Si x Months Ended December 31, 2016 |
|  |  |  |  |  | Weighted |  |  | Weighted |  |  |  |  |
|  |  |  |  |  | Average |  |  | Average |  |  | Aggregate |
|  |  |  |  |  | Exercise |  |  | Remaining |  |  | Intrinsic |
|  | Shares |  |  | Price |  |  | Contractual Term (in years) |  |  | Value |
Outstanding at 6/30/16 |  |  | 2,976,490 |  |  | $ | 8.97 |  |  |  | 6.6 |  |  | $ | 8,338,974 |
Granted |  |  | 834,320 |  |  | $ | 11.05 |  |  |  |  |  |  |  |  |
Forfeitures |  |  | (147,375 | ) |  | $ | 16.03 |  |  |  |  |  |  |  |  |
Exercised |  |  | (38,063 | ) |  | $ | 7.75 |  |  |  |  |  |  |  |  |
Outstanding at 12/31/16 |  |  | 3,625,372 |  |  | $ | 9.18 |  |  |  | 7.1 |  |  | $ | 4,648,729 |
Exercisable at 12/31/16 |  |  | 1,700,025 |  |  | $ | 8.73 |  |  |  | 5.1 |  |  | $ | 3,216,899 |
Schedule of Nonvested Share Activity [Table Text Block] |
|  | Shares |  |  | Weighted-Average Grant Date Fair Value |
Unvested at June 30, 2017 |  |  | 1,842,127 |  |  | $ | 3.52 |
Granted |  |  | 794,537 |  |  | $ | 1.73 |
Vested |  |  | (513,504 | ) |  | $ | 3.49 |
Forfeited |  |  | (202,134 | ) |  | $ | 3.46 |
Unvested at December 31, 2017 |  |  | 1,921,026 |  |  | $ | 2.79 |
Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block] |
|  | Shares |  |  | Weighted-Average Grant Date Fair Value |
Unvested at June 30, 2017 |  |  | 133,335 |  |  | $ | 10.38 |
Awarded |  |  | 91,490 |  |  | $ | 5.92 |
Shares Issued |  |  | (30,675 | ) |  | $ | 10.30 |
Shares Forfeited |  |  | (7,000 | ) |  | $ | 10.46 |
Unvested at December 31, 2017 |  |  | 187,150 |  |  | $ | 8.21 |

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